Top for a picnic table



FIG. 1 is a perspective view of a top for a picnic table;

FIG. 2 is a top view of the top for a picnic table;

FIG. 3 is a front view of the top for a picnic table, with the rear view being a mirror image thereof; and,

FIG. 4 is a right side view of the top for a picnic table, with the left side view being a mirror image thereof.

The broken lines shown in the figures are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a top for a picnic table, as shown and described. 